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IQMS-143 fiches techniques PDF

IQD - MEMS Oscillator

Numéro de référence IQMS-143
Description MEMS Oscillator
Fabricant IQD 
Logo IQD 





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IQMS-143 fiche technique
ISSUE 1; March 2016
Description
Smallest footprint chip scale package (CSP), ultra low power
MEMS Temperature Compensated Oscillator at 32.768kHz
with CMOS output in a plastic package featuring a
programmable drive strength feature to optimise specific clock
applications. Factory programmable for a short lead time. Uses
SiTime’s MEMS First™ technology.
APPLICATIONS:
Smart Meters (Automatic Meter Reading)
Health and Wellness Monitors
Pulse-per-Second (pps) Timekeeping
RTC Reference Clock
Frequency Parameters
Frequency
32.768kHz
Frequency Stability
±5.00ppm to ±20.00ppm
Ageing
±1ppm max in 1st year @ 25°C
& Vs=3.3V
Frequency Stability and Tolerance Combined (Over
Temperature):
When stability=±5ppm, stability and tolerance
combined=±10ppm
When stability=±10ppm, stability and tolerance
combined=±13ppm
When stability=±20ppm, stability and tolerance
combined=±22ppm
Note: Frequency Stability is measured as peak-to-peak/2.
Inclusive of three reflow processes and ±20% load variation,
no board level underfill. Tested with an Agilent 53132A
frequency counter. Due to the low operating frequency the
gate time must be 100ms to ensure an accurate frequency
measurement.
Supply Voltage Variation:
@ Vs=1.8V ±10%: ±0.75ppm max
@ Vs=1.5V to 3.63V: ±1.5ppm max
Electrical Parameters
Supply Voltage: 1.5V to 3.63V @ -40°C to 85°C
Absolute Maximum Supply Voltage Rating: -0.5 to 3.63V
Absolute Short Duration Supply Voltage (30mins max): 4.0V
max
Note: Operating beyond these limits may result in change or
permanent damage to the oscillator.
Core Operating Current:
Measured with -
TA=25°C, Vs=1.8V and no load: 0.99μA typ
TA=-40°C to 85°C, Vs=1.5V to 3.63V and no load: 1.52μA max
Note: Core Operating Current does not include Output Driver
Operating Current or load current. To derive Total Operating
Current (no load) add Core Operating Current + Output Driver
Operating Current (a function of Output Voltage Swing).
Power Supply Ramp (Vs ramp-up from 0 to 90%, TA=-40°C to
85°C): 100ms max
Start Up Time @ Power Up:
Measured with -
TA=-40°C to 60°C, valid output: 180ms typ, 300ms max
TA=60°C to 70°C, valid output: 350ms max
TA=70°C to 85°C, valid output: 380ms max
MEMS Oscillator Specification
IQMS-143
Outline (mm)
Sales Office Contact Details:
UK: +44 (0)1460 270200
Germany: 0800 1808 443
France: 0800 901 383
USA: +1.760.318.2824
Printed on 31 Aug 16 16:03 using Model Data Sheet V1.2550
Web: www.iqdfrequencyproducts.com
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